A synchronous generator is running over excited with a Ef=1.40pu. Thi – McqOptions

MCQOPTIONS

1.	A synchronous generator is running over excited with a Ef=1.40pu. This machine, with a synchronous reactance of 1.2pu, is delivering a synchronous power of 0.5pu to the bus. If the prime-mover torque is increased by 1%, by how much will the reactive power, Q change?
A.	-0.475 %
B.	0.475%
C.	4.75%
D.	-4.75%
Answer» B. 0.475%

Discussion

No Comment Found

Related MCQs

In a synchronous machine, hunting is predominantly damped by __________
For the effective electromechanical energy conversion in the device, the developed torque depends upon __________
The phasor addition of stator and rotor mmfs in a cylindrical rotor synchronous machine, is possible because __________
A synchronous machine which is synchronized with an infinite bus. If it is desired to obtain a condition when the machine delivers the real power to the IBB without changing the field excitation, then __________
A synchronous generator is running over excited with a Ef=1.40pu. This machine, with a synchronous reactance of 1.2pu, is delivering a synchronous power of 0.5pu to the bus. If the prime-mover torque is increased by 1%, by how much will the reactive power, Q change?
A synchronous generator is operating with a Ef=1.40pu. This machine having Xs of 1.2pu, is delivering a synchronous power of 0.5pu to the bus. If the prime-mover torque is increased by 1%, by how much will the synchronous power P change?
Maximum power in cylinder rotor alternator occurs at load angle of __________
If the synchronous machine is connected to an infinite bus of constant voltage Vt, through a transformed, a transmission line of reactance ‘X’. Then power for a cylindrical machine is?
A cylindrical rotor alternator can also run as reluctance motor.
A 3 phase 400V cylindrical rotor is running at 1500rpm. Suddenly the field excitation zero. Then the net reluctance power is?